Abaixo está uma instrução que descreve uma tarefa de geração de SQL, combinada com uma entrada que fornece mais contexto sobre os esquemas de tabela disponíveis. Escreva o código SQL que responda adequadamente à solicitação
 ###Instrução: Quando a aeronave foi introduzida que poderia acomodar 115 pessoas?
 ###Tabelas: CREATE TABLE pool_2 (pool_2_id AUTO_INCREMENT PRIMARY KEY, Team VARCHAR, P INT, W INT, D INT, L INT, Tries for INT, Tries against INT, Try diff VARCHAR, Points for INT, Points against INT, Points diff VARCHAR, Pts INT) CREATE TABLE results_in_minnesota_state_elections (results_in_minnesota_state_elections_id AUTO_INCREMENT PRIMARY KEY, Year INT, Office VARCHAR, Candidate VARCHAR, Popular Votes INT, Percentage VARCHAR) CREATE TABLE aircraft_operated (aircraft_operated_id AUTO_INCREMENT PRIMARY KEY, Aircraft VARCHAR, Introduced INT, Retired VARCHAR, Seating VARCHAR, Notes VARCHAR) CREATE TABLE formation_of_the_1st_arkansas_state_troops (formation_of_the_1st_arkansas_state_troops_id AUTO_INCREMENT PRIMARY KEY, Company VARCHAR, Name VARCHAR, County VARCHAR, Militia Regiment VARCHAR, Commander VARCHAR, Organization Date VARCHAR) CREATE TABLE comparison_chart (comparison_chart_id AUTO_INCREMENT PRIMARY KEY, Project VARCHAR, License VARCHAR, Date VARCHAR, Protocol VARCHAR, Technology VARCHAR, Server VARCHAR, Client VARCHAR, Web Client VARCHAR, Multiple Sessions VARCHAR, Encryption VARCHAR, Authentication VARCHAR, Data Compression VARCHAR, Image Quality VARCHAR, Color Quality VARCHAR, File Transfer VARCHAR, Clipboard Transfer VARCHAR, Chat VARCHAR, Relay VARCHAR, HTTP Tunnel VARCHAR, Proxy VARCHAR)  
SELECT AVG Introduced FROM aircraft_operated WHERE Seating = 115